Attachment for overhead electric carriers.



H. M. HARDING. 4 ATTACHMENT FOR OVERHEAD ELECTRIC oAE IEEs.

PATENTED APR. 7, 1903.

I No. 724,866.

APPLICATION FILED APR. 21,1902.

I0 MODEL.

WITNESSES:

lNVE/VTOH 4%. MW?

. &-' ATTOHNEYJ amurgg. WASHINGTON a c UNITED STATES I PATENT OFFICE.

HENRY M. HARDING, OF NEw'YoRm-N.

ATTACHMENT FOR OVERHEAD ELECTRIC CARRIERS.

SPECIFICATION forming part of LettersPatent No. 724,860, dated April 7,1903.

Application filed April 21; 1902. Saria1No.l03,899| (No model.)

To all whom it mwy concernl;

Be it known that I, HENRY M. HARDING, a citizen of the United States,and a resident of the city, county, and State of New York, have inventedcertain new and useful Improvements in Attachments for Overhead ElectricCarriers, of which the following is a specification.

The object of my invention is to obviate the danger of fires on docks,warehouses, piers,&c.,where inflammable goods are stored from thedropping of sparks or hot metal particles from overhead electricconductors used for conveying current to electric carriers.

In the drawings of this specification, Figu re 1 is a view showing theoverhead rail, the conductors, and a portion of the electric carrier. IFig. 2 is a plan view of the same, parts being shown in section andother parts broken away. Fig. 3 is a diagrammatic view furtherillustrating the invention. Fig. 4 is a sectional view showing theapparatus complete withthe carrier.

A represents a girder or beam of the structure which supports the railB, on which runs the electric carrier or telpher C.

D represents the electric conductors supplying the current for thecarrier, these being of well-known shape and being insulated from theirsupport in the customary manner.

E represents the plow, attached to the electric carrier, which plowcarries the contactshoes F, which are normally forced out by springs Gagainst the conductors D. This is an ordinary and well-knownconstruction and need not bedescribed further.

Surrounding the electrical conductors on the top, side, and bottom is acasing H, which may be of sheet metal or any desired non-in flammablematerial. This casing has at the top a slot through which the plow ofthe elec tric carrier passes. At the sides are orifices through whichthe supports for the electric conductors pass, as clearly illustrated inFig. 1. These orifices are made the same size as the supports. It willbe seen from this construction that sparks or pieces of molten or hotmetal falling from the conductor or from the contact-pieces will becaught and retained in the casing, thus entirely obviating all dangerfrom fire. The slot may be on the side or on any place save the bottomof the casing.

What I claim, and desire to secure by Let-- ters Patent, is

1. In a device for overhead electric carriers, the combination with theconductors for the electric current of a. protective casing surroundingsaid conductor in such a manner as to prevent the falling of sparks orthe like, substantially as described.

2. In a device for overhead electric carriers, the combination with theconductors for the electric current of-a protective casing surroundingsaid conductor in such a manner as to prevent the falling of sparks orthe like, saidconductor being provided with an orifice or slot throughwhich the plow of the electric carrier passes, substantially asdescribed.

In testimony whereof I have hereunto set my hand, in the city, county,and State of New York, this 10th day of April, 1902.

HENRY M. HARDING.

